NOVEMBEB 1, 1907] 



SCIENCE 



597 



by rearings of the insects in separate lots, 

 fed upon green and red foliage respectively. 



Frederick Knab 



U. S. National Museum, 

 Washington, D. C. 



cone in cone 

 Similar limestones of same geological age 

 are seen high in the Missouri bluffs from the 

 Platte and Buchanan County line to the An- 

 drew County line. Beyond the Nodaway 

 River we find these beds lower in the hills and 

 within two miles are seen near the railroad 

 grade. 



These limestones are No. 150 and 152 of 

 my section of the Upper Coal Measures, pub- 

 lished in the Missouri Geological Eeport en- 

 titled "Iron Ores and Coal Fields," 1872, in 

 part 2, page 92. 



No. 150 occurs in strata of irregular thick- 

 ness. Near Amazonia certain beds of it have 

 been reported to make a good quality of hy- 

 draulic cement. Twenty feet is the total 

 thickness of No. 150. 



No. 152 lies above and is separated from 

 150 by two feet of clay shales. No. 152 is 

 sometimes oolitic and also shows cross lamina- 

 tion. It furnishes an excellent building stone. 

 Lander's quarry, a few miles north of Savan- 

 nah, Andrew County, is of this rock. Over- 

 lying No. 152 we sometimes find a two-inch 

 bed of cone in cone. 



At only one other horizon in Missouri has 

 cone in cone been obtained. It is found at 

 Henry Kunkel's, on Nichols Creek, in Holt 

 County, occupying a position approximately 

 175 feet above the other I have mentioned. 

 Very fine specimens have been obtained from 

 Nichols Creek, where it is about three inches 

 thick. 



The finest specimens of cone in cone I ob- 

 tained from a branch of Dry Fork, in the 

 northwest part of Bond County, Illinois, near 

 James Valentine's and probably in Sec. 19 

 T. C. N. R. 4 "W. Pocahontas is probably the 

 nearest town. We found here twenty feet of 

 argillaceous shale beds with flattened iron- 

 stone concretions resting on three feet of gTay 

 fossil-bearing limestones. The cone in cone 



occurs twenty feet above the limestone and is 

 about two and a half inches thick. In com- 

 position it is an argillaceous limestone and 

 shows perfect cones interlocking from each 

 surface. It was traced along the branch for 

 several hundred yards. [See Vol. VI., HI. 

 Geol. Surv., p. 133.] 



In Geological Survey of Wisconsin, Iowa 

 and Minnesota D. D. Owen, Phila., 1852, p. 

 112, mention is made of " Tutenmergel " be- 

 ing found in Iowa near certain briny springs. 

 He states that in Gei-many its origin is 

 thought to be from shrinkage of strata. But 

 Owen speaks of it in Iowa and refers it to 

 the imperfect crystallization produced by min- 

 eral matter filtering through marly beds. Dr. 

 B. F. Shumard, who was much with Owen, 

 informed me that Owen's tutenmergel was 

 cone in cone. I think the former probably 

 due to imperfect crystallization under pres- 

 sure. Its origin and that of arragonite may 

 be the same. Von Gotta speaks of it as 

 " Tuten-nagel." 



Stylolite structure, so common in many of 

 our Lower Carboniferous limestones, may have 

 a similar origin, but the cone is wanting. 



G. C. Broadhead 



Columbia, Mo., 

 July, 1907 



QUOTATIONS 



EXTERNALISM IN AMERICAN UNIVERSITIES 



It is but natural, where organization is so 

 important and the office of administration is 

 magnified, that the presidency should fast lose 

 its connection with active and advancing 

 scholarship. There is so much governing to be 

 done — because in our universities we trust so 

 much to government — that in but few places 

 can a president continue a scholar's life. So 

 the old type of leadei^, learned and temperate, 

 fast yields to the new type, — self-confident, 

 incisive, Eooseveltian. And with the coming 

 of the new type, there seems to be an increas- 

 ing stress upon rapid accomplishment, upon 

 " doing things," with grave risk that our places 

 of learning will preserve a less clear vision of 

 what is catholic and enduring. 



The constitution of our universities is an 



